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CX2SA > SATDIG 17.01.12 21:04l 117 Lines 3012 Bytes #999 (0) @ WW
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Subj: AMSAT-BB-digest V7 30
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Sent: 120117/2002Z @:CX2SA.SAL.URY.SA #:47626 [Salto] FBB7.00e $:AMSATBB730
From: CX2SA@CX2SA.SAL.URY.SA
To : SATDIG@WW
Today's Topics:
1. SpaceX WF9XJL STA application (Tarsala, Jan A (337C))
2. Re: Model Rocket Booster Engine for Picosatellite (G0MRF@xxx.xxxx
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Message: 1
Date: Tue, 17 Jan 2012 10:52:42 -0800
From: "Tarsala, Jan A (337C)" <jan.a.tarsala@xxx.xxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] SpaceX WF9XJL STA application
Message-ID: <CB3B037A.B791%jan.a.tarsala@xxx.xxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
https://apps.fcc.gov/oetcf/els/reports/STA_Print.cfm?mode=current&application_
seq=50384&RequestTimeout=1000
73,
Jan
WB6VRN
MSL Telecom
NASA Jet Propulsion Laboratory
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Message: 2
Date: Tue, 17 Jan 2012 14:42:52 -0500 (EST)
From: G0MRF@xxx.xxx
To: rhyolite@xxxxxxxx.xxxx amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Model Rocket Booster Engine for Picosatellite
Message-ID: <339b7.5d46a280.3c47293c@xxx.xxx>
Content-Type: text/plain; charset="US-ASCII"
Thanks Joe.
What an exciting concept.
Having got really enthusiastic, I thought I would roughly calculate how
high one of these little rockets could raise the orbit.
Given that one rocket reload pack has
40 Newtons of thrust
and lasts for about one second
We have 40 Newton seconds of specific impulse.
The mass flow rate is 18.6g in one second or 0.0168kg/s
So.....the ISP (a bit vague here) is around 219 seconds (ave thrust / mass
flow rate / 9.81ms^2)
Which should get a 3.7kg satellite's apogee about..... 40km higher.
So...Not enough for P3E then
Oh well, not so exciting after all. Time for a beer.
73 David G0MRF
In a message dated 17/01/2012 03:56:37 GMT Standard Time,
rhyolite@xxxxxxxx.xxx writes:
Has anyone seen this. I am surprised a shuttle mission permitted this
type of booster. From what I believed, safety concerns prevented most
types of boosters.
http://www.rocketryplanet.com/content/view/3706/30/#axzz1jgQ85qx1
--
Joe Leikhim
Leikhim and Associates
Communications Consultants
Oviedo, Florida
www.Leikhim.com
JLeikhim@xxxxxxx.xxx
407-982-0446
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originating from bogus GMail accounts, I have found it necessary to block
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End of AMSAT-BB Digest, Vol 7, Issue 30
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